/* * Phytec pcm030 driver for the PSC of the Freescale MPC52xx * configured as AC97 interface * * Copyright 2008 Jon Smirl, Digispeaker * Author: Jon Smirl <jonsmirl@gmail.com> * * This file is licensed under the terms of the GNU General Public License * version 2. This program is licensed "as is" without any warranty of any * kind, whether express or implied. */ #include <linux/init.h> #include <linux/module.h> #include <linux/device.h> #include <linux/of_device.h> #include <linux/of_platform.h> #include <sound/soc.h> #include "mpc5200_dma.h" #define DRV_NAME "pcm030-audio-fabric" struct pcm030_audio_data { struct snd_soc_card *card; struct platform_device *codec_device; }; static struct snd_soc_dai_link pcm030_fabric_dai[] = { { .name = "AC97.0", .stream_name = "AC97 Analog", .codec_dai_name = "wm9712-hifi", .cpu_dai_name = "mpc5200-psc-ac97.0", .codec_name = "wm9712-codec", }, { .name = "AC97.1", .stream_name = "AC97 IEC958", .codec_dai_name = "wm9712-aux", .cpu_dai_name = "mpc5200-psc-ac97.1", .codec_name = "wm9712-codec", }, }; static struct snd_soc_card pcm030_card = { .name = "pcm030", .owner = THIS_MODULE, .dai_link = pcm030_fabric_dai, .num_links = ARRAY_SIZE(pcm030_fabric_dai), }; static int pcm030_fabric_probe(struct platform_device *op) { struct device_node *np = op->dev.of_node; struct device_node *platform_np; struct snd_soc_card *card = &pcm030_card; struct pcm030_audio_data *pdata; int ret; int i; if (!of_machine_is_compatible("phytec,pcm030")) return -ENODEV; pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data), GFP_KERNEL); if (!pdata) return -ENOMEM; card->dev = &op->dev; platform_set_drvdata(op, pdata); pdata->card = card; platform_np = of_parse_phandle(np, "asoc-platform", 0); if (!platform_np) { dev_err(&op->dev, "ac97 not registered\n"); return -ENODEV; } for (i = 0; i < card->num_links; i++) card->dai_link[i].platform_of_node = platform_np; ret = request_module("snd-soc-wm9712"); if (ret) dev_err(&op->dev, "request_module returned: %d\n", ret); pdata->codec_device = platform_device_alloc("wm9712-codec", -1); if (!pdata->codec_device) dev_err(&op->dev, "platform_device_alloc() failed\n"); ret = platform_device_add(pdata->codec_device); if (ret) dev_err(&op->dev, "platform_device_add() failed: %d\n", ret); ret = snd_soc_register_card(card); if (ret) dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret); return ret; } static int pcm030_fabric_remove(struct platform_device *op) { struct pcm030_audio_data *pdata = platform_get_drvdata(op); int ret; ret = snd_soc_unregister_card(pdata->card); platform_device_unregister(pdata->codec_device); return ret; } static struct of_device_id pcm030_audio_match[] = { { .compatible = "phytec,pcm030-audio-fabric", }, {} }; MODULE_DEVICE_TABLE(of, pcm030_audio_match); static struct platform_driver pcm030_fabric_driver = { .probe = pcm030_fabric_probe, .remove = pcm030_fabric_remove, .driver = { .name = DRV_NAME, .owner = THIS_MODULE, .of_match_table = pcm030_audio_match, }, }; module_platform_driver(pcm030_fabric_driver); MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver"); MODULE_LICENSE("GPL");